yum update took 99.99% of cpu

[JD]

FC20.

I ran yum -y update.
After all the files were downloaded, the delta processing started. From
there on, all the way through to the end of
installation and cleanup, cpu was 99.99% taken up
by the update process, and the entire desktop became
unresponsive. I was unable to switch display windows,
of which I had 6.

The update had downloaded a total of 161MB, for a total
of about 30 updates, most of them wine related.

The machine is a dual core Intel running at 2.4GHz,
with 4GB ram.